Remove custom element type extensions.

sky/engine/bindings/core/v8/V8HiddenValue.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef SKY_ENGINE_BINDINGS_CORE_V8_V8HIDDENVALUE_H_
 #define SKY_ENGINE_BINDINGS_CORE_V8_V8HIDDENVALUE_H_
 
 #include "sky/engine/bindings/core/v8/ScopedPersistent.h"
 #include "sky/engine/bindings/core/v8/ScriptPromiseProperties.h"
 #include "v8/include/v8.h"
 
 namespace blink {
 
 class ScriptWrappable;
 
 #define V8_HIDDEN_VALUES(V) \
     V(arrayBufferData) \
     V(customElementAttachedCallback) \
     V(customElementAttributeChangedCallback) \
     V(customElementCreatedCallback) \
     V(customElementDetachedCallback) \
     V(customElementDocument) \
     V(customElementIsInterfacePrototypeObject) \
     V(customElementNamespaceURI) \
     V(customElementTagName) \
-    V(customElementType) \
     V(callback) \
     V(condition) \
     V(data) \
     V(detail) \
     V(document) \
     V(error) \
     V(event) \
     V(idbCursorRequest) \
     V(port1) \
     V(port2) \
@@ skipping 18 matching lines @@
 
 private:
 #define V8_DECLARE_FIELD(name) ScopedPersistent<v8::String> m_##name;
     V8_HIDDEN_VALUES(V8_DECLARE_FIELD);
 #undef V8_DECLARE_FIELD
 };
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_BINDINGS_CORE_V8_V8HIDDENVALUE_H_